Every question from this NCERT chapter, with a detailed explanation.
Consider the following statements regarding celestial bodies: 1. All celestial bodies emit their own heat and light in large amounts. 2. Stars are celestial bodies made up of gases. 3. The Sun is a celestial body that reflects the light of other stars. Which of the statements given above is/are correct?
With reference to the phases of the Moon, consider the following statements: 1. The Full Moon can be seen only once in about a month’s time. 2. The New Moon night is also known as Poornima. 3. On Amavasya, the night sky can be watched best if it is a clear night. Which of the statements given above is/are correct?
Which one of the following star groups is a recognizable part of the Ursa Major constellation?
Consider the following pairs regarding the Solar System: Pair | Description 1. Geoid | Earth-like shape 2. Orbit | Circular path of planets 3. Satellite | Celestial body moving around planets 4. Asteroids | Found between Earth and Mars How many of the above pairs are correctly matched?
The term ‘Planet’ is derived from the Greek word ‘Planetai’, which translates to:
Consider the following statements regarding the Pole Star: 1. It changes its position constantly throughout the night. 2. It indicates the North direction. 3. Its position can be located with the help of the Saptarishi constellation. Which of the statements given above is/are correct?
With reference to the planets in the solar system, consider the following statements: 1. Venus is considered as ‘Earth’s-twin’ because of its similar size and shape. 2. Mercury takes the longest time to complete one round along its orbit. 3. Among the outer planets, only Saturn has rings. Which of the statements given above is/are correct?
Which of the following planets are classified as "Inner Planets"? 1. Neptune 2. Mars 3. Venus 4. Earth Select the correct answer using the code given below:
Consider the following statements about the Sun: 1. It is the ultimate source of heat and light for the solar system. 2. It provides a repulsive force that expands the solar system. 3. It is about 150 million km away from the Earth. Which of the statements given above is/are correct?
Consider the following statements regarding the Earth: 1. It is the second nearest planet to the Sun. 2. It is the fifth largest planet in the solar system. 3. It is slightly flattened at the poles. Which of the statements given above is/are correct?
With reference to the Moon, consider the following statements: 1. Its diameter is only one-quarter that of the Earth. 2. It moves around the Earth in about 45 days. 3. It takes significantly longer to complete one spin on its axis than to orbit the Earth. Which of the statements given above is/are correct?
Which celestial bodies are described as "Outer Planets" in the solar system?
Consider the following statements regarding Asteroids: 1. They are tiny bodies that move around the Sun. 2. They are found between the orbits of Earth and Mars. 3. Scientists believe they are parts of a planet which exploded many years back. Which of the statements given above is/are correct?
Who among the following holds the distinction of being the first person to step on the surface of the Moon?
With reference to Meteoroids, consider the following statements: 1. They are large gaseous bodies that move around the Sun. 2. They typically burn due to friction before falling on the Earth. 3. The flash of light seen during their fall is due to friction with the air. Which of the statements given above is/are correct?
The "Milky Way" galaxy was named "Akash Ganga" in ancient India because:
Consider the following hierarchy of the cosmos: 1. Earth 2. Solar System 3. Universe 4. Galaxy Which one of the following is the correct ascending order of the above?
Which one of the following planets is often referred to as 'Earth's Twin' due to its similar size and shape?
Consider the following statements regarding the time taken by planets to spin on their axis: 1. Mars takes the shortest time to complete one spin on its axis among all planets. 2. Venus takes the longest time to complete one spin on its axis. 3. Earth takes about 48 hours to complete one spin. Which of the statements given above is/are correct?
Why was Pluto reclassified as a "dwarf planet" in August 2006?
Consider the following pairs regarding the number of moons: Planet | Moons (Approx.) 1. Jupiter | About 53 2. Uranus | About 27 3. Neptune | 13 4. Mars | 1 How many of the above pairs are correctly matched ?
The rings around Jupiter, Saturn, and Uranus are composed of:
Which of the following statements about the Moon's surface is correct?
Consider the following statements regarding Human-made Satellites: 1. They are artificial bodies designed by scientists. 2. They are launched directly from the Earth's surface without the aid of rockets. 3. INSAT and EDUSAT are examples of Indian satellites in space. Which of the statements given above is/are correct?
In the etymology of the term 'Geography', the Greek root 'ge' refers to:
With reference to the distance from the Sun, which planet lies between Venus and Mars?
Consider the following statements: 1. The Sun is about 50 million km away from the Earth. 2. Light from the Sun takes about eight minutes to reach the Earth. 3. The Moon is about 3,84,400 km away from the Earth. Which of the statements given above is/are correct?
Consider the following statements regarding the "Inner Planets": 1. They are very close to the Sun. 2. They are made up of gases and liquids. 3. They include Jupiter, Saturn, Uranus, and Neptune. Which of the statements given above is/are correct?
Which planet takes approximately 88 days to complete one orbit around the Sun?
Match List I with List II and select the correct answer using the code given below: List I (Planet) | List II (Orbit Time) A. Earth | 1. 29 years, 5 months B. Mars | 2. 11 years, 11 months C. Jupiter | 3. 687 days D. Saturn | 4. 365 days
Consider the following statements regarding the visibility of the Moon: 1. The Full Moon is visible only once in about a month. 2. A fortnight after the Full Moon, the Moon appears as a Full Moon again. 3. The New Moon night is the best time to observe the night sky if it is clear. Which of the statements given above is/are correct?
Which one of the following is the primary reason for the invisibility of stars during the daytime?
Consider the following statements about the Earth's shape: 1. It is a perfect sphere. 2. It is slightly flattened at the poles. 3. Its shape is described as a Geoid. Which of the statements given above is/are correct?
Consider the following statements regarding the "Saptarishi": 1. It is a group of twelve stars. 2. It helps in locating the Pole Star. 3. It is a part of the Orion constellation. Which of the statements given above is/are correct?
Consider the following statements about the Earth as a unique planet: 1. It is neither too hot nor too cold. 2. It lacks water but has air essential for survival. 3. Its air has life-supporting gases like oxygen. Which of the statements given above is/are correct?
Which of the following statements is correct regarding the visibility of the Moon?
Match List I with List II and select the correct answer using the code given below: List I (Celestial Body) | List II (Characteristic) A. Sun | 1. Satellite B. Moon | 2. Planet C. Earth | 3. Small piece of rock D. Meteoroid | 4. Star
Consider the following statements about stars: 1. They are typically small and cold bodies. 2. They are celestial bodies made up of gases. 3. They emit their own heat and light. Which of the statements given above is/are correct?
What is the approximate duration of the Moon's revolution around the Earth?
Consider the following statements regarding the "Pole Star": 1. It helps in finding the North direction. 2. It changes its position every night. 3. It was unknown to ancient people for determining directions. Which of the statements given above is/are correct?
In terms of size, which one of the following is the fifth largest planet in the solar system?
In the context of the solar system, what defines a 'Satellite'?
Between which two planets is the Asteroid Belt located?
What is the primary cause for the burning up of meteoroids upon entering the Earth's atmosphere?
Match List I with List II and select the correct answer using the code given below: List I (Planet) | List II (Classification) A. Mercury | 1. Inner Planet B. Jupiter | 2. Outer Planet C. Venus | 3. Inner Planet D. Neptune | 4. Outer Planet
Consider the following statements comparing Mercury and Venus: 1. Mercury has a shorter orbit time than Venus. 2. Venus has a shorter spin time than Mercury. 3. Both are Inner Planets made of rocks. Which of the statements given above is/are correct?
Which celestial body is often referred to as the 'companion' of the Earth?
Match List I with List II and select the correct answer using the code given below: List I (Planet) | List II (Orbit Time) A. Uranus | 1. 29 years, 5 months B. Neptune | 2. 11 years, 11 months C. Saturn | 3. 164 years D. Jupiter | 4. 84 years
Why does the Earth appear blue from outer space?
Who among the following was a renowned astronomer of ancient India?
Consider the following statements about the rings of planets: 1. They are invisible from Earth even with powerful telescopes. 2. Jupiter, Saturn, and Uranus have rings. 3. They are belts of small debris. Which of the statements given above is/are correct?
Consider the following statements: 1. The Moon has a dense atmosphere. 2. The Moon has no water. 3. The Moon's surface is entirely flat without mountains. Which of the statements given above is/are correct?
Consider the following statements regarding the Solar System: 1. It consists of the Sun, eight planets, satellites, asteroids, and meteoroids. 2. The Earth is in the center of the solar system. 3. All planets move around the Sun in elongated paths. Which of the statements given above is/are correct?
If light travels at 300,000 km per second, how long does it take for sunlight to reach the Earth?
Which one of the following planets is often designated as the "Blue Planet"?
Consider the following statements about the "Universe": 1. It is a cluster of millions of stars. 2. It contains millions of galaxies. 3. It is difficult to imagine how big it is. Which of the statements given above is/are correct?